You have a system of rules that people can rely on.

Bureaucrats work within a system of rules, and they make their decisions in writing.

There are a variety of different rule systems to define play.

It contains information on character creation and the basic rules system.

Our democracy is based upon a system of rules.

George remains skeptical, even after Jerry explains the rules system to him.

This does not mean that social rule systems do not change.

Property in land, under the English system of rules, is said to be "four dimensional".

Other rules systems do not allow this - the ten count continues even after the round ends.

Any system of rules, no matter how well thought out, can be subverted to work against its original intent.